Always get error CS1519

I found this code on a youtube page and wanted to try it in my new demo I am very new to unity and would love some help with this. the errors-

Assets/Autowalk.cs(11,13): error CS1519: Unexpected symbol using' in class, struct, or interface member declaration Assets/Autowalk.cs(11,26): error CS1519: Unexpected symbol ;' in class, struct, or interface member declaration

The code on the link-

 using UnityEngine;
 using System.Collections;
 
 public class Autowalk : MonoBehaviour {
  
   private CardboardHead head;
   private Vector3 startingPosition;
   private float delay = 0.0f; 
    
   void Start() {
     head = Camera.main.GetComponent<StereoController>().Head;
     startingPosition = transform.localPosition;
   }
    
   void Update() {
     RaycastHit hit;
     bool isLookedAt = GetComponent<Collider>().Raycast(head.Gaze, out hit, Mathf.Infinity);
     // if looking at object for 2 seconds, enable/disable autowalk
     if (isLookedAt && Time.time>delay) { 
       GameObject FPSController = GameObject.Find("Head");
       FPSInputController autowalk = FPSController.GetComponent<FPSInputController>();
       autowalk.checkAutoWalk = !autowalk.checkAutoWalk;
       delay = Time.time + 2.0f;
     }
     // currently looking at object
     else if (isLookedAt) { 
       GetComponent<Renderer>().material.color = Color.yellow; 
     } 
     // not looking at object
     else if (!isLookedAt) { 
       GetComponent<Renderer>().material.color = Color.red; 
       delay = Time.time + 2.0f; 
     }
   }
   
 }